25.7% is the change from 642 to 807
Calculation steps:
[( 807 - 642 ) ÷ 642] x 100 = 25.7%
Formula
Percentage change = [(807 - 642) / 642] x 100
Subtract the new number by the original number
807 - 642 = 165
165 ÷ 642 = 0.2570093457943925
0.2570093457943925 x 100 = 25.7%